Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
권호 표지

Influence of Spot Weld Pitches on Collapse Characteristics for SCP1 Vehicle Members

차체구조용 SCP1 강도부재의 점용접간격이 압궤특성에 미치는 영향

  • 차천석 (조선대학교 항공ㆍ조선공학부) ;
  • 박제웅 (조선대학교 항공ㆍ조선공학부) ;
  • 양인영 (조선대학교 기계공학부)
  • Published : 2002.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

Front-side members are structures with the greatest energy absorbing capability in a front-end collision of vehicles. This paper was performed to analyze initial collapse characteristics of spot welded hat and double hat-shaped section members, which are basic shape of side members, on the shift of flange weld pitches. The impact collapse tests were carried out by using home-made vertical air compression impact testing machine, and impact velocity of hat-shaped section members is 4.17m/sec and that of double hat-shaped section members is 6.54m/sec. In impact collapse tests, the collapsed length of hat-shaped section members was about 45mm and that of double hat-shaped section members was about 50mm. In consideration of these condition, axial static collapse tests(0.00017m/sec) of hat and double hat-shaped section members were carried out by using UTM which was limited displacement, about 50mm. As the experimental results, to obtain the best initial collapse characteristics, it is important that stiffness of vehicle members increases as section shapes change and the progressively folding mode induces by flange welding pitch.

Keywords

References

  1. John Fenton : Handbook of vehicle design analysis. Society of Automotive Engineering. 1996. 9-12
  2. E. Haug et al. : Recent Trends and Advances in Crash Simulation and Design of Vehicles. Proceedings of the NATO-SAl. July 1996. 343-359
  3. P.K. Syamal and M. Bhatti: Rear Full overlap High Speed Car-to-Car Impact Simulations. SAE Paper. 1995. No. 951085
  4. S. Li and S.R. Reid : Relationship Between the Elastic Bucking of Square Tubes and Rectangular Plates. International Journal of Applied Mechanics. 57(1990).969-973
  5. C.A. Krauss and D.H. Laananen : A Parametric Study of Crush Initiators for a Thin-Walled Tube. International Journal of Vehicle Design. 15(1994). 385-401
  6. M. Avalle and G. Belingardi : Experimental Evaluation of the Strain Field History During Plastic Progressive Folding of Aluminium Circular Tubes. International Journal of Mechanical Science. 39-5(1997). 575-583
  7. A.A. Singace : Axial Crushing Analysis of Tubes Deforming in the Multi-Lobe Mode. International Journal of Mechanical Science. 41(1999) 865-890
  8. M.D. White and N. Jones : Experimental quasistatic axial crushing of top-hat and double-hat thin-walled sections. International Journal of Mechanical Science. 41(1999). 179-208
  9. M.D. White. N. Jones and W. Abramowicz : A theoretical analysis for the quasi-static axial crushing of top-hat and double-hat thin-walled sections. International Journal of Mechanical Sciences. 41(1999). 209-233
  10. Cheon Seok Chao Jeong Ho Kim and Young Yang In : A Study on the Collapse Characteristics of Hat-Shaped Members with Spot Welding under Axial Compression, Korean Society of Precision Engineering, 17-3(2000), 192-199(in Korean)
  11. H.F. Mahmood and A. Paluzny : Design of thin walled Columns for Crash Energy Management-Their Strength and Model of Collapse, Proc. 4rd Instructurral Conference on Vehicle Structural Mechanics, 1981. 7-18
  12. Chon Wook Kim, Byoung Kee Han and Byeongsam Kim : A study on crushing characteristic of hatted section tube, The Korean Society of Automotive Engineers, 10-2(2002), 212-219(in Korean)